Knight's is releasing one last batch of these, last chance to grab one before the Mod 2 version comes out later this year.
Revamped for 2014 is the Knight's Armament SR-15 E3 CQB SBR. This complete upper assembly is the version with an 11.5" barrel, and Knight's Armament mid-length URX 3.1. The URX 3.1 featured 5 anti-rotation QD sling swivel sockets and a removable bottom rail for cleaning. A 4 piece rail cover kit is included, there are 3 flat panels and 1 with a build in hand stop. The barrel is fitted with an A2 flash hider and pinned low profile gas block with a carbine length gas system. Atop the URX 3.1 is the Knight's Armament micro front sight (elevation adjustable). At the rear is the Knight's Armament 200-600m micro rear sight that is flip up and adjustable for windage and elevation. The upper receiver has the recoil slots "T" numbered and is engraved with the KAC shield. An LMT charging handle with tactical latch is included. The E3 bolt includes rounded locking lugs for extreme durability and is mated to the E3 barrel extension. The KAC CQB SBR will work with any standard SR-15 or AR-15 lower receiver once the included Knight's Armament HH buffer is installed. All NFA rules apply!